濕式電除塵器是一種用來處理含微量粉塵和微顆粒的新除塵設備,主要用來除去含濕氣體中的塵、酸霧、水滴、氣溶膠、臭味、PM2.5等有害物質,是治理大氣粉塵污染的理想設備。
濕式電除塵器通常簡稱WESP,與干式電除塵器的除塵基本原理相同,要經歷荷電、收集和清灰三個階段。
濕式電除塵(chen)器主(zhu)要有兩種(zhong)(zhong)結構形(xing)式,一(yi)種(zhong)(zhong)是使用(yong)(yong)(yong)耐(nai)腐蝕(shi)導電材(cai)料(liao)(liao)(可以為導電性(xing)能優良的(de)(de)的(de)(de)非(fei)金屬材(cai)料(liao)(liao)或具有耐(nai)腐蝕(shi)特性(xing)的(de)(de)金屬材(cai)料(liao)(liao))做集(ji)塵(chen)極(ji)(ji),另一(yi)種(zhong)(zhong)是用(yong)(yong)(yong)通過噴水或溢流水形(xing)成導電水膜,利用(yong)(yong)(yong)不導電的(de)(de)非(fei)金屬材(cai)料(liao)(liao)做集(ji)塵(chen)極(ji)(ji)。
收(shou)塵原理(li)
濕式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)和(he)與(yu)干(gan)式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)的(de)(de)(de)收(shou)塵(chen)(chen)(chen)(chen)(chen)(chen)原理(li)(li)相同,都是靠高壓電(dian)(dian)暈放電(dian)(dian)使得粉塵(chen)(chen)(chen)(chen)(chen)(chen)荷(he)(he)電(dian)(dian),荷(he)(he)電(dian)(dian)后的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)(chen)在電(dian)(dian)場力(li)的(de)(de)(de)作用下(xia)到(dao)達集塵(chen)(chen)(chen)(chen)(chen)(chen)板/管。干(gan)式電(dian)(dian)收(shou)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)主要(yao)處理(li)(li)含水很低的(de)(de)(de)干(gan)氣體,濕式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)主要(yao)處理(li)(li)含水較(jiao)高乃至飽和(he)的(de)(de)(de)濕氣體。在對集塵(chen)(chen)(chen)(chen)(chen)(chen)板/管上捕集到(dao)的(de)(de)(de)粉塵(chen)(chen)(chen)(chen)(chen)(chen)清(qing)除(chu)方式上WESP與(yu)DESP有較(jiao)大區別(bie),干(gan)式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)一般采用機(ji)械振打(da)或(huo)聲波(bo)清(qing)灰等(deng)方式清(qing)除(chu)電(dian)(dian)極上的(de)(de)(de)積灰,而濕式電(dian)(dian)除(chu)塵(chen)(chen)(chen)(chen)(chen)(chen)器(qi)則采用定期沖(chong)洗的(de)(de)(de)方式,使粉塵(chen)(chen)(chen)(chen)(chen)(chen)隨(sui)著沖(chong)刷(shua)液的(de)(de)(de)流動(dong)而清(qing)除(chu)。